Article ID: CBB000551031

A Proton Accelerator in Trondheim in the 1930s (2004)

unapi

Johan Holtsmark at the Norwegian Institute of Technology (N.T.H.) in Trondheim, Norway, built a Van de Graaff generator for nuclear disintegration between 1933 and 1937. This is believed to be the second Van de Graaff generator in Europe and the first particle accelerator in Scandinavia. Holtsmark's successful project followed the failed attempt at N.T.H. by Olaf Devik in the 1920s to develop a discharge tube for nuclear disintegration driven by an evacuated Tesla coil. The genesis of Holtsmark's project was the interaction with Odd Dahl, who had constructed a Van de Graaff accelerator at the Department of Terrestrial Magnetism, Carnegie Institution of Washington. Holtsmark approached organizations potentially interested in cancer research and treatment for financial support. The electrical engineers appointed to build several parts of the accelerator had been radio amateurs, like many accelerator pioneers at the time. The team had to construct almost everything themselves given financial constraints and the lack of a supporting electrical industry. When operative in 1937, the Van de Graaff generator was already a comparatively small machine. The Trondheim scientists chose to develop it as a precision machine for proton capturing experiments in light elements. The accelerator proved a useful tool for research and teaching until 1963, when it was shut down and given to the Norwegian Museum of Science and Technology. This article seeks to answer why Holtsmark engaged in such an ambitious project in the periphery of Europe's scientific community and how he succeeded at a small department with several coexisting research activities.

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Authors & Contributors
Michael Wiescher
Sam M. Austin
Hoffmann, Hans Falk
Wittje, Roland
Wilson, Richard Guy
Wilson, E. J. N.
Journals
Physics in Perspective
Historical Studies in the Physical and Biological Sciences
科学史研究 Kagakusi Kenkyu (History of Science)
Historical Studies in the Natural Sciences
Chinese Journal for the History of Science and Technology
Publishers
World Scientific
Oxford University Press
MIT Press
Institute of Physics Publishing
Harvard University Physics Department
Arkiv Förlag
Concepts
Particle accelerators
Atomic, nuclear, and particle physics
Physics
Scientific apparatus and instruments
Big science
Science and politics
People
Nishina, Yoshio
Joliot-Curie, Frédéric
Bell, John Stewart
Time Periods
20th century
20th century, late
21st century
20th century, early
Places
United States
Europe
Switzerland
Sweden
Norway
Japan
Institutions
European Organization for Nuclear Research (CERN)
Cornell University
Sanford Underground Research Facility
European Spallation Source (ESS)
Large Hadron Collider (LHC)
Michigan State University
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